“It does happen from time to time at other matches but it’s not a common occurrence.”

A spokesman for Dundee United said the club had been informed of the incident and were awaiting further information.

Police Scotland said they had not been contacted regarding the matter.

Raith fans reacted furiously after the match.

Taking to Fantalk, an unofficial online forum for Raith Rovers fans, one supporter described the incident as “very nasty” and another said: “I hope this scumbag is identified and dealt with accordingly”.